Cleaning and maintenance

TacoTherm Dual ZEPTO

Interval

Maintenance work

Personnel

Every year

Clean the heat interface unit ( Ä Chapter 10.3.1 ‘Cleaning the

heat interface unit’ on page 49).

Operator

Clean the strainer (

Ä Chapter 10.3.2 ‘Cleaning the strainer’

on page 50).

Operator

Heating and sanitary technician

Check the piping and bolted connections of the heat interface

unit for leak-tightness. If you are unsure, consult a heating

technician.

If there is a leak, replace the bolted connection or the pipe at

this point (

Ä Chapter 10.3.3 ‘Replacing a bolted connection or

pipe’ on page 51).

Operator

Heating and sanitary technician

Check whether all ball valves can be closed and opened. To do

so, close each ball valve once and open it again.

If you are unsure, consult a heating technician.

Operator

Check the wiring of the main terminal box and the connection

module.

Electrician

Check the water quality.

If necessary, take appropriate measures to comply with country-

specific regulations regarding water quality.

Heating and sanitary technician

Check the wall fasteners and the housing of the heat interface

unit.

Operator

Heating and sanitary technician

Check the controller software for updates in accordance with the

documentation for the controller.

Heating and sanitary technician

10.3

Maintenance work

10.3.1

Cleaning the heat interface unit

NOTICE!

Property damage due to incorrect cleaning agents!

Aggressive cleaning agents can damage pipes,

bolted connections or other components of the heat

interface unit.

– Do not use any aggressive cleaning agents.

V03 06/2025 Item no. 215250 EA no. 1292

Operating instructions

49